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Finding the Fourth Proportional to 14,685.00, 20,264.75 and 7,970.48

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Solution

The fourth proportional to 14,685.00, 20,264.75 and 7,970.48 is: 10,998.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,685.00 : 20,264.75 = 7,970.48 : x
  2. Step 2: Convert to fraction form
    14,685.00/20,264.75 = 7,970.48/x
  3. Step 3: Cross multiply
    14,685.00x = 20,264.75 × 7,970.48
  4. Step 4: Simplify right side
    14,685.00x = 161,519,803.00
  5. Step 5: Solve for x
    x = 161,519,803.00/14,685.00
  6. Step 6: Final answer
    x = 10,998.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.